专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明专利

JPH06212989A SUPERCHARGER 失效
公开(公告)号：JPH06212989A
公开(公告)日：1994-08-02
申请号：JP516193
申请日：1993-01-14
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： AKATSU TADASHI
IPC分类号： F01M11/03 , F02B39/14
摘要： PURPOSE:To provide a supercharger, by which cleaning of lube oil can be carried out satisfactorily so that there is no fear of supplying lube oil containing foreign matter to a bearing part. CONSTITUTION:A cylindrical holder 28 engaged with a female screw formed on a lube oil inlet 12 is provided on the lube oil 12 of a bearing chamber 18 of a supercharger S, and an oil filter 29 is mounted on the end area of the holder 28. Thus, the oil filter 29 acts to filter foreign matter contained in lube oil just before a lube oil inlet 12 of the bearing chamber 18. Accordingly, the removal of foreign matter contained in lube oil can be surely accomplished so as to prevent damage of a bearing, lock of a shaft and the occurrence of disadvantage such as contact between a blade and a case due to vibration of the shaft and prevent generation of abnormal sound.

2. 发明专利

JPH0693804A VARIABLE CAPACITY RADIAL TURBINE 失效
公开(公告)号：JPH0693804A
公开(公告)日：1994-04-05
申请号：JP24301292
申请日：1992-09-11
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： AKATSU TADASHI
IPC分类号： F01D17/12
摘要： PURPOSE:To enhance the turbo-efficiency during low load operation by providing a movable nozzle in a dripping part in a scroll so that an arcuate part of a top side surface of the movable nozzle is projected onto an extension of the scrolled end of the scroll. CONSTITUTION:A movable nozzle 6 has a blade profile and is composed of a nozzle top part 18 and a nozzle end 17. The center of the circumferentially moving shaft of a movable nozzle 6 is located at a position which is distant from the center of the inlet diameter (D) of a turbine blade by a value (L) 20 given by the sum of the radius (D/2) of the turbine blade inlet diameter (D) 12, a gap (G) 13 having a uniform value in a range from 0.35 to 2mm and the radius (r) of the nozzle head 18 of the movable nozzle 6, so that the scrolled leading end 23 of the scroll and the scrolled trailing end 11 of the scroll are parted from each other in the water dripping part 5. Further, a part of an arcuate side surface of the nozzle head 18 is projected so as to cover the scrolled trailing end 11 at the terminal end of the latter. Thereby it is possible to enhance the turbo efficiency during low load operation.

3. 发明专利

JPH0196429A SHAFT SEALING DEVICE FOR SUPERCHARGER 失效
公开(公告)号：JPH0196429A
公开(公告)日：1989-04-14
申请号：JP25369987
申请日：1987-10-09
申请人： HITACHI LTD
发明人： AKATSU TADASHI , HOKARI TOMIO
IPC分类号： F02B39/00 , F02B39/14
摘要： PURPOSE:To prevent burning and oil leakage into a turbine case by forming a burrier wall and an oil-cut space with respect to a turbine shaft oil-cut section integrally with a center housing having a water-cooled jacket. CONSTITUTION:Lubricant led from the outside of a supercharger into a bearing section 16 and ejected to turbine side collides against the endface 19 of an oil-cut section 10 and dispersed radially then discharged through an oil-cut space 21. Lubricant flowed out through a micro gap between the oil-cut section 10 and a burrier wall 20 is dispersed radially through the oil-cut section 10 and discharged through an oil discharge space 13 to the outside. Lubricant does not leak into a turbine case because of low pressure produced in the turbine case. A water jacket 23 arranged in a center housing 11 around a bearing section 16 cools the barrier wall 20 and the oil-cut space 21 then further cools lubricant, the bearing section 16 and a turbine shaft 4, and thereby no carbon bridge is produced around the oil-cut section 10 or the bearing section 16.

4. 发明专利

JPH05332101A VARIABLE CAPACITY RADIAL TURBINE 失效
公开(公告)号：JPH05332101A
公开(公告)日：1993-12-14
申请号：JP13473292
申请日：1992-05-27
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： AKATSU TADASHI
IPC分类号： F01D17/16
摘要： PURPOSE:To improve turbo efficiency at the time of low load by maintaining a gap between a movable nozzle and a turbine blade inlet constant in the minimum range without being influenced by the working range of the movable nozzle and eliminating a clearance part of a free space formed by a turbine blade at the time of low load. CONSTITUTION:A scroll finish winding part 11 of a draining part 5 is made to project to the inlet side of a turbine blade 3 by way of maintaining a minimum gap 13 (constant in the range of B3'=0.35-2.0) with a movable nozzle 6 and the turbine blade 3. Additionally, in the same way, the scroll finish winding part 11 of the draining part 5 is made to project in a space between the movable nozzle 6 and the inlet of the turbine blade 3 by way of maintaining the minimum gap 13 (constant in the range of G3'=0.35-2.0) at the movable nozzle 6.

5. 发明专利

JPH04287836A SHAFT SEAL DEVICE OF SUPERCHARGER 失效
公开(公告)号：JPH04287836A
公开(公告)日：1992-10-13
申请号：JP5107091
申请日：1991-03-15
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： AKATSU TADASHI
IPC分类号： F02B39/14
摘要： PURPOSE:To prevent leakage of lubrication oil to the inside of a turbine case and deposition of carbon sludge and improve a cooling effect in the bearing chamber of a supercharger. CONSTITUTION:Partition walls 10, 11 in radial direction are provided on both sides or either one side of a cooling passage inside a bearing chamber. Consequently, a passage for lubrication oil is formed so as to regulate its flow, and excessive lubrication oil is not attached to the throat portion of any turbine blade, and leakage to the back face of the blade is prevented. A contact area to the lubrication oil is increased, and a cooling effect is increased.

6. 发明专利

JPS62182434A SUPERCHARGER FOR INTERNAL COMBUSTION ENGINE 失效
公开(公告)号：JPS62182434A
公开(公告)日：1987-08-10
申请号：JP2384086
申请日：1986-02-07
申请人： HITACHI LTD
发明人： AKATSU TADASHI
IPC分类号： F02B37/18 , F02B37/12
摘要： PURPOSE:To prevent seizure of a turbine shaft, by providing a means which is actuated during the starting at a low temperature and bypasses exhaust gas, fed to a turbine impeller, from the impeller. CONSTITUTION:Exhaust gas causes rotation of a turbine impeller 4, and is over-pressurized by a compressor part rotated integrally to feed the gas to an internal combustion engine. The supercharging pressure is guided to an actuator 14, operation of a valve 8 of a bypass hole 7 is controlled depending upon the magnitude of the supercharging pressure to regulate the supercharging pressure to a given value. When, during the starting at a low temperature, the temperature of lubricant oil flowing through a passage 22 is low, a coil 23 is contracted to pull a link plate 19, a link 10 is pushed by a claw 20 at the other end of the link plate to open a valve 8 formed integrally with a valve stay 9, an amount of exhaust gas to the impeller 4 is reduced, and a turbine shaft is rotated at a low speed. This constitution enables prevention of seizure of the turbine shaft due to deficiency in lubricating oil during the starting at a low temperature.

7. 发明专利

JP2002070568A EXHAUST GAS TURBINE SUPERCHARGER 失效
公开(公告)号：JP2002070568A
公开(公告)日：2002-03-08
申请号：JP2000267172
申请日：2000-09-04
申请人： HITACHI LTD , HITACHI CAR ENG CO LTD
发明人： AKATSU TADASHI
IPC分类号： F01D9/02 , F01D25/24 , F02B39/00
摘要： PROBLEM TO BE SOLVED: To provide an exhaust gas turbine supercharger easily uniformizing the flow of exhaust gas by a low-cost and simple structure. SOLUTION: This exhaust gas turbine supercharger is provided with an exhaust gas turbine device 4 which has an exhaust gas turbine 3 having a shaft part 9 connected to an intake turbine 7 disposed in a passage of the exhaust gas of an internal combustion engine, its diametrical outer circumferential side covered with an exhaust gas turbine housing 2, and a vortex channel 1 guiding the exhaust gas of the internal combustion engine in the exhaust gas turbine housing 2; and an intake turbine device 8 having the intake turbine 7 disposed in the air intake passage. The exhaust gas turbine device 4 is provided with a thermal insulation plate 20 insulating the heat from the vortex channel 1 to the intake turbine device 8 side on the intake turbine device 8 side of the vortex channel and the thermal insulating plate 20 is provided with at least one guide vane 21 guiding the exhaust gas to the exhaust gas turbine 3.

8. 发明专利

JPH06264755A SUPERCHARGER 失效
公开(公告)号：JPH06264755A
公开(公告)日：1994-09-20
申请号：JP5541993
申请日：1993-03-16
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： AKATSU TADASHI
IPC分类号： F01M11/03 , F02B39/14
摘要： PURPOSE:To remove foreign matters, especially metal foreign matters, from bearings rotating at a high speed so as to supply purified lubricant oil to respective bearings. CONSTITUTION:A connector 23 is fixed to the lubricant oil port 12 of the bearing wheel chamber 18 of a supercharger with a connector bolt 22 via a packing 19. A cylindrical field material 28 is provided in a lubricant oil sump 31 which is formed by the connector bolt 22 and the connector 23. One or a plurality of through-holes may be provided around the field material 28. Thus lubricant oil which is free from foreign matters is supplied to respective bearings so that malfunction such as flaws in bearings, lock of a shaft, contact between a blade and a case, etc., can be eliminated.

9. 发明专利

JPH03246362A EGR NEGATIVE PRESSURE GENERATION CONTROL METHOD AND EGR CONTROL DEVICE FOR DIESEL ENGINE 失效
公开(公告)号：JPH03246362A
公开(公告)日：1991-11-01
申请号：JP4368990
申请日：1990-02-23
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： AKATSU TADASHI
IPC分类号： F02D41/04 , F02B3/06 , F02D9/02 , F02D43/00 , F02M25/07
摘要： PURPOSE:To improve the control accuracy by providing a bypass passage furnishing an auxiliary valve detouring a valve for generating negative pressure, in a diesel engine in which the exhaust gas is sucked to a suction passage by a negative pressure generated by opening and closing the valve for generating negative pressure provided in the suction passage. CONSTITUTION:A valve 7 for generating EGR negative pressure is provided in a suction passage 4, and an exhaust gas return flow passage 12 furnishing an EGR valve 13 on the way, which communicates an exhaust gas passage 3 and the downstream 4a of the EGR negative pressure generating valve 7 of the suction passage 4 is provided. To the side wall of a chamber body 5 of the suction passage 4, a bypass passage 16 to communicate the downstream and the upstream of the valve 7 for generating negative pressure detouring the valve 7 is provided. On the way of the bypass passage 16, an auxiliary valve 18 driven by an electromagnetic actuator 19 is provided. And the system is controlled to open the EGR valve 14, to close the negative pressure generating valve 7, and to open the auxiliary valve 18, in a low load condition, to open all the valves 14, 7, and 8 in a middle class load condition, and to close the EGR valve 13 and to open both the negative pressure generating valve 7 and the auxiliary valve 8 in a high load condition.

10. 发明专利

JPH03160147A EGR THROTTLE CHAMBER DEVICE 失效
公开(公告)号：JPH03160147A
公开(公告)日：1991-07-10
申请号：JP29676389
申请日：1989-11-15
申请人： HITACHI LTD , HITACHI AUTOMOTIVE ENG
发明人： AKATSU TADASHI , HOKARI TOMIO
IPC分类号： F02M25/07 , F02D9/02 , F02D9/10 , F02D23/00
摘要： PURPOSE:To contrive compactness of a structure and reduction of the cost by providing a throttle shaft and a throttle valve, integrally with a compressor case, in its inlet part of a turbocharger, in the case of an internal combustion engine with the turbocharger. CONSTITUTION:A turbine case 4 of a turbocharger 50 is mounted to an exhaust passage 2 of an engine 1, and an exhaust passage 5 is connected to an outlet side of the turbine case 4. While a compressor case 7, provided on a coaxial line with the turbine case 4, is mounted to an intake passage 15, and an outlet side of this case 7 is connected to the engine 1 via a supercharge passage 8. Here the inlet part 7A of the compressor case 7 serves concurrently as the throttle chamber body of an EGR throttle chamber device 51 with a throttle valve 9 and its throttle shaft 10 provided in this inlet part 7A. The throttle shaft 10 is open-close driven by a diaphragm device 11 through a rod 13 and a link 14.

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式